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- Title
New Heptazine Based Materials with a Divalent Cation - Sr[H<sub>2</sub>C<sub>6</sub>N<sub>7</sub>O<sub>3</sub>]<sub>2</sub>·4H<sub>2</sub>O and Sr[HC<sub>6</sub>N<sub>7</sub>(NCN)<sub>3</sub>]·7H<sub>2</sub>O.
- Authors
Braml, Nicole E.; Schnick, Wolfgang
- Abstract
The new heptazine based compounds Sr[H2C6N7O3]2 ·4H2O and Sr[HC6N7(NCN)3] ·7H2O have been synthesized by metathesis reactions in aqueous solution. Crystal structures were studied by single-crystal X-ray diffraction and Rietveld refinement. Strontium cyamelurate tetrahydrate exhibits distorted zigzag strands embedding Sr2+ ions surrounded by crystal water molecules ( Fdd2, a = 1194.0(17), b = 6358.14(97), c = 602.73(89) pm, Z = 8, GOF = 1.034, Rp = 0.033, wRp = 0.042, RB = 0.84). Strontium melonate heptahydrate crystallizes in a layer-like structure characteristic for heptazine-based compounds ( P $\bar{1}$, a = 660.76(13), b = 1080.7(2), c = 1353.8(3) pm, α = 101.67(3), β = 101.40(3), γ = 94.60(3)°, Z = 2, R1 = 0.032, wR2 = 0.072). Additionally, the thermal behavior has been studied by DTA/TG measurements and FTIR spectroscopy data are presented.
- Publication
Zeitschrift für Anorganische und Allgemeine Chemie, 2013, Vol 639, Issue 2, p275
- ISSN
0044-2313
- Publication type
Article
- DOI
10.1002/zaac.201200345